# -*- coding: utf-8 -*-


# cmap2owl -- Helper application to convert from concept maps to OWL ontologies
# Copyright (c) 2008-2013  Rodrigo Rizzi Starr
#  
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#  
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#  
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


'''
Contains a set of rules to identify different individuals

@author: Rodrigo Rizzi Starr
@copyright: Copyright © 2008-2013 Rodrigo Rizzi Starr
@license: MIT License
@contact: rodrigo.starr@gmail.com
'''


# Project imports
from CMap2Prolog import assemblyQuery, assemblyText
from mapperRules.mapperQuestion import getLabelOfElements
from log import log
log.debug('Loaded...')


class InfoProvider(object):
    '''Returns a provider of info for a given rule class'''
    
    def __init__(self, db = None, query = '', message = ''):
        self.db = db
        self.query = query
        self.message = message
    
    def getInfo(self, element):
        '''Returns a list of info tuples about element'''
        
        if self.query != '':
            query = list(self.db.query(assemblyQuery(self.query, element)))
            
            labels = set()
            for result in query:
                elLabels = getLabelOfElements(self.db, result['Set'])
                labels.update(elLabels)
            
            if len(labels) == 0:
                return []
            elif len(labels) == 1:
                return [(self.message, labels.pop())]
            else:
                return [(self.message, ', '.join(labels))]
        else:
            return []

        
class SimpleInfoProvider(InfoProvider):
    '''Returns a provider of info for a given rule class'''
    
    def getInfo(self, element):
        '''Returns a list of info tuples about element'''
        
        if self.query != '':
            query = list(self.db.query(assemblyQuery(self.query, element)))
            
            if len(query) == 0:
                return []
            else:
                return [(self.message, None)]
        else:
            return []

        
class TextGenInfoProvider:
    '''An InfoProvider able to fill in the information text with results from
       a Prolog query.
    '''
    
    def __init__(self, db = None, query = '', message = ''):
        self.db = db
        self.query = query
        self.message = message
    
    def getInfo(self, element):
        '''Returns a list of info tuples about element'''
        
        if self.query != '':
            query = list(self.db.query(assemblyQuery(self.query, element)))
            
            messages = []
            for result in query:
                message = assemblyText(self.message, result, self.db)
                messages.append(message)
            
            if len(messages) > 0:
                return [(message, None) for message in messages]
            else:
                return []
        else:
            return []
        
        
class UnionOfInfoProviders(InfoProvider):
    '''Creates a class that is the union of one or more InfoProvider'''
    
    def __init__(self, *providers):
        InfoProvider.__init__(self)
        self.providers = providers
        
    def getInfo(self, element):
        '''Return the info of each provider'''
        
        messages = []
        for provider in self.providers:
            messages.extend(provider.getInfo(element))
            
        return messages
    
    
